Two times in his second letter Peter said he meant to stir us up “by way of reminder” (2 Peter 1:13; 3:1). This is what I need all day long. Reminders of massive truth.

If my mind is empty or worldly, my faith languishes. My joy in Christ weakens. I need truth. “You will know the truth, and the truth will set you free” (John 8:32).

My mind needs glory: “Set your minds on things that are above” (Colossians 3:2). I need to think on excellent praiseworthy reality:. “If there is any excellence, if there is anything worthy of praise, think about these things” (Philippians 4:8).

But my mind drifts into banal and trivial things. And my soul shrivels.